Explain Three Different Mechanisms for the Maintenance of Genetic Variation.
Crossing over or recombination between chromatids of homologous chromosomes during meiosis. Selection typically reduces variation. How Prokaryotes Achieve Genetic Diversity Microbiology Health And Disease Mutation is any change in an organisms DNA Most mutations are harmful to their bearers or are neutral but if environmental conditions change previously harmful or neutral alleles may. . 1999 but see also Buonaccorsi et al. Genetic variation comes from mutations within DNA. Maintenance of genetic variation in personality through control of mental mechanisms. Mutations are changes in the information contained in genetic material. So here are the situations that can maintain genetic variation in principle. A balance between mutation and selection. Mutation increases genetic variation. Mutation Gene flow Genetic drift Nonrandom mating Natural selection Mutations Generate Genetic Variation Origin of genetic va...